On causality conditions in de Sitter spacetime

Bittermann, Noah; McLoughlin, Daniel; Rosen, Rachel A.

doi:10.1088/1361-6382/accc05

On causality conditions in de Sitter spacetime

Journal Article · Tue May 02 00:00:00 EDT 2023 · Classical and Quantum Gravity

DOI:https://doi.org/10.1088/1361-6382/accc05· OSTI ID:2403073

Bittermann, Noah ^[1]; ^[2]; ^[2]

Columbia University, New York, NY (United States); Carnegie Mellon University, Pittsburgh, PA 15213
Columbia University, New York, NY (United States)

We carefully consider the Shapiro time delay due to black holes and shockwaves in de Sitter spacetime and study the implications for causality. We discuss how causality conditions of AdS and flat spacetime can be applied in de Sitter spacetime, using spatial shifts measured on the boundary to define 'fastest null geodesics' and taking into account the 'stretching' of the de Sitter Penrose diagram. We consider the propagation of a massless spin-1 field with a non-minimal coupling in a de Sitter shockwave background as an illustrative example. Here, we also briefly discuss connections to the average null energy condition.

View Accepted Manuscript (DOE)

Research Organization:: Carnegie Mellon University, Pittsburgh, PA (United States)

Sponsoring Organization:: USDOE Office of Science (SC), High Energy Physics (HEP)

Grant/Contract Number:: SC0010118; SC0011941

OSTI ID:: 2403073

Journal Information:: Classical and Quantum Gravity, Journal Name: Classical and Quantum Gravity Journal Issue: 11 Vol. 40; ISSN 0264-9381

Publisher:: IOP PublishingCopyright Statement

Country of Publication:: United States

Language:: English

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72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
79 ASTRONOMY AND ASTROPHYSICS
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Shapiro time delay
causality conditions
de Sitter spacetime
shockwaves

On causality conditions in de Sitter spacetime

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